make the init-lib default to racket/kernel/init, instead of racket/base
make the init-lib default to racket/kernel/init, instead of racket/base

This will be set to racket/init in the future.

samth/pycket,pycket/pycket,cderici/pycket,pycket/pycket,cderici/pycket,samth/pycket,cderici/pycket,samth/pycket,pycket/pycket